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Thomas Kruse
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‎.github/workflows/build.yml‎

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name: 'build images'
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on:
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workflow_dispatch:
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# schedule:
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# - cron: '7 5 * * *'
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push:
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jobs:
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docker:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout
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uses: actions/checkout@v3
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- name: Prepare
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id: prep
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run: |
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DOCKER_IMAGE=trion/local-git
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VERSION=latest
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SHORTREF=${GITHUB_SHA::8}
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#use branch as version
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if [[ $GITHUB_REF == refs/heads/* ]]; then
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VERSION=${GITHUB_REF#refs/heads/}
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[ $VERSION == "master" ] && VERSION=latest
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fi
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#use tag as version
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if [[ $GITHUB_REF == refs/tags/* ]]; then
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VERSION=${GITHUB_REF#refs/tags/}
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fi
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#use version as image tag
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TAGS="${DOCKER_IMAGE}:${VERSION}"
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# If version is a number also tag it 'latest'.
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if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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TAGS="$TAGS,${DOCKER_IMAGE}:latest"
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fi
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echo ::set-output name=tags::${TAGS}
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echo ::set-output name=docker_image::${DOCKER_IMAGE}
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- name: Set up QEMU
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uses: docker/setup-qemu-action@master
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with:
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platforms: all
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- name: Set up Docker Buildx
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id: buildx
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uses: docker/setup-buildx-action@master
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- name: Cache Docker layers
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uses: actions/cache@v3
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with:
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path: /tmp/.buildx-cache
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key: ${{ runner.os }}-buildx-${{ github.sha }}
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restore-keys: |
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${{ runner.os }}-buildx-
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- name: Login to DockerHub
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if: github.event_name != 'pull_request'
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uses: docker/login-action@v2
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with:
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username: ${{ secrets.DOCKER_USERNAME }}
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password: ${{ secrets.DOCKER_PASSWORD }}
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- name: Build
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uses: docker/build-push-action@v2
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with:
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builder: ${{ steps.buildx.outputs.name }}
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context: .
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file: ./Dockerfile
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platforms: linux/amd64,linux/arm64
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push: true
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tags: ${{ steps.prep.outputs.tags }}
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cache-from: type=local,src=/tmp/.buildx-cache
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cache-to: type=local,dest=/tmp/.buildx-cache-new

‎Dockerfile‎

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FROM python:3.12-slim
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RUN apt-get update && \
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apt-get install -y git && \
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rm -rf /var/lib/apt/lists/*
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RUN mkdir -p /git-repos /app
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WORKDIR /app
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COPY server.py .
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EXPOSE 8080
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CMD ["python", "-u", "server.py"]

‎README‎

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docker run -v $PWD:/git-repos/demo -p 8080:8080 --rm -it ghcr.io/trion-development/local-git
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‎server.py‎

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import os
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import subprocess
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import sys
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from http.server import HTTPServer, BaseHTTPRequestHandler
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PORT = 8080
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PROJECTS_ROOT = os.getenv("GIT_PROJECT_ROOT", "/git-repos")
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# ignore permissions
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subprocess.run(['git', 'config', '--global', '--add', 'safe.directory', '*'])
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subprocess.run(['git', 'config', '--system', '--add', 'safe.directory', '*'])
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backend = subprocess.check_output(['git', '--exec-path']).decode().strip()
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backend_path = os.path.join(backend, 'git-http-backend')
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class GitRequestHandler(BaseHTTPRequestHandler):
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def do_GET(self):
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if self.path == "/" or self.path.endswith("/"):
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self.list_repos()
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else:
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self.handle_git()
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def list_repos(self):
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self.send_response(200)
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self.send_header("Content-type", "text/html")
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self.end_headers()
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repos = [d for d in os.listdir(PROJECTS_ROOT) if os.path.isdir(os.path.join(PROJECTS_ROOT, d))]
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html = f"<html><body><h1>Available Repositories</h1><ul>"
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for r in repos:
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html += f"<li><a href='/{r}/info/refs?service=git-upload-pack'>{r}</a></li>"
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html += "</ul><p>Clone via: <code>git clone http://localhost:8080/YOUR_REPO_NAME</code></p></body></html>"
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self.wfile.write(html.encode())
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def do_POST(self):
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self.handle_git()
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def handle_git(self):
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env = {
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'REQUEST_METHOD': self.command,
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'GIT_PROJECT_ROOT': PROJECTS_ROOT,
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'GIT_HTTP_EXPORT_ALL': '1',
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'PATH_INFO': self.path.split('?')[0],
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'QUERY_STRING': self.path.split('?')[1] if '?' in self.path else '',
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'CONTENT_TYPE': self.headers.get('Content-Type', ''),
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'REMOTE_ADDR': self.client_address[0],
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}
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content_length = int(self.headers.get('Content-Length', 0))
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input_data = self.rfile.read(content_length) if content_length > 0 else None
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proc = subprocess.Popen(
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[backend_path],
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env=env,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE
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)
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stdout_data, stderr_data = proc.communicate(input=input_data)
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header_part, _, body = stdout_data.partition(b'\r\n\r\n')
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self.send_response(200)
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for line in header_part.split(b'\r\n'):
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if b':' in line:
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key, val = line.split(b':', 1)
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self.send_header(key.decode().strip(), val.decode().strip())
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self.end_headers()
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self.wfile.write(body)
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if stderr_data:
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print(f"Git Error: {stderr_data.decode()}", file=sys.stderr)
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print(f"")
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print(f"--- Filesystem git HTTP bridge ---")
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print(f"Backend: {backend_path}")
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print(f"Serving from: {PROJECTS_ROOT}")
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print(f"URL: http://localhost:{PORT}/<your-repo-name>")
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print(f"----------------------------------")
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print(f"")
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HTTPServer(('0.0.0.0', PORT), GitRequestHandler).serve_forever()

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